CVE-2026-7578Network attack vector

Authenticated unrestricted file upload via plugin installer

Published May 1, 2026 · Updated May 1, 2026

Unrestricted file upload in MacCMS Pro 2022.1.0 through 2022.1.3 allows remote authenticated users to upload files through the plugin installer. The install function at /admi.php/admin/addon/add.html accepts plugin files without enforcing access controls or dangerous-file restrictions. High-privilege access is required, and successful exploitation places attacker-chosen content on the server; public sources do not disclose its final path or execution behavior.

CVSS severity4.7
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in MacCMS Pro 2022.1.0 through 2022.1.3 allows remote authenticated users to upload files through the plugin installer. The install function at /admi.php/admin/addon/add.html accepts plugin files without enforcing access controls or dangerous-file restrictions. High-privilege access is required, and successful exploitation places attacker-chosen content on the server; public sources do not disclose its final path or execution behavior.

The record

CVE
CVE-2026-7578
Published
May 1, 2026
Updated
May 1, 2026
Vendor
MacCMS Pro
Product
MacCMS Pro
Classifications
CWE-284, CWE-434, T1105
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 1, 2026CVE publishedPublication date reported by the CVE source.
  2. May 1, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2022.1.0
  2. Affected versionversion=2022.1.1
  3. Affected versionversion=2022.1.2
  4. Affected versionversion=2022.1.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

MacCMS Pro · MacCMS Proversion=2022.1.0; version=2022.1.1; version=2022.1.2; version=2022.1.3

Published CVSS scores

2.0VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
5.8VulDBAV:N/AC:L/Au:M/C:P/I:P/A:P
4.7VulDBCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
CWE-434Unrestricted Upload of File with Dangerous Type
T1105Ingress Tool Transfer

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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